JP6480852B2 - How to paint tape, door rail and car body - Google Patents

Description

  The present invention relates to a method for painting a vehicle body having a sliding door, and a tape and a door rail suitable for the method.

  In the manufacture of automobiles, the vehicle body and the door are each manufactured through a pressing process and a welding process. In the next painting process, if the vehicle body and the door are individually painted, it is known that there is a slight difference in color tone between the two. As a countermeasure, a vehicle body is attached to a door (temporary attachment), and both are painted at the same time. After painting, remove the doors from the car body and attach parts to each.

  In the case of a sliding door, painting is difficult because the sliding door overlaps the vehicle body when the door is opened in a side view of the vehicle. As a countermeasure, it has been proposed to perform painting using a painting jig without directly attaching the sliding door to the vehicle body (see Patent Document 1 (FIG. 7)).

Patent document 1 is demonstrated based on the following figure.
FIG. 10 is a diagram for explaining the basic structure of a conventional painting jig. The painting jig 100 temporarily attaches one end of a sliding door 102 that slides the vehicle body side surface 101 to open and close the door opening to the vehicle body side surface 101. It consists of a link mechanism 104 that stops.
A pin 106 inserted into the pin hole 105 regulates the opening angle of the slide door 102 with respect to the vehicle body side surface 101. By providing a plurality of pin holes 105 and pins 106, the sliding door 102 can be held at a plurality of opening angles.

  The painting jig 100 has a ring mechanism 104 as a main element, and the ring mechanism 104 is composed of a plurality of members and a plurality of joints, so that it is complicated, heavy, and expensive.

  While reduction in coating cost is desired, simplification, weight reduction, and cost reduction of a coating jig are required.

JP 2001-205150 A

  An object of the present invention is to provide a simple, lightweight, and low-cost coating jig.

The invention according to claim 1 is a peelable tape that is affixed to a door rail that opens and closes a sliding door,
The tape is provided with a step portion for restricting movement of a roller portion attached to the slide door at one position in an intermediate position between a fully closed position and a fully open position of the slide door.

The invention according to claim 2 is a door rail attached to the vehicle body,
A peelable tape provided with a step portion that restricts movement of the roller portion attached to the slide door at one position between the fully closed position and the fully open position of the slide door is affixed. It is characterized by.

The invention according to claim 3 is a coating method for performing electrodeposition, drying and coating on a vehicle body provided with a sliding door,
A first jig detachably attached to the front pillar in front of the slide door, a second jig detachably attached to the rear pillar behind the front pillar, and a third jig detachably attached to the slide door. And a tape having a step portion for restricting movement of the roller portion attached to the slide door,
The movement limit in the vicinity of the fully closed position of the sliding door is implemented by engaging the first jig with the third jig,
The movement limit in the vicinity of the fully open position of the sliding door is implemented by engaging the second jig with the third jig,
The movement restriction at the intermediate position of the slide door is performed by sticking the tape to a slide rail and interposing the roller portion at a step portion of the tape.

  In the invention which concerns on Claim 1, a step part is provided in what is called a masking tape. Since only the masking tape is modified, the cost of purchasing the tape does not increase.

  In the invention which concerns on Claim 2, since the tape with a step part is only affixed on a door rail, the procurement cost of a door rail does not increase.

  In the invention according to claim 3, the movement restriction in the vicinity of the fully closed position of the slide door is performed by engaging the first jig with the third jig, and the movement restriction in the vicinity of the fully open position of the slide door is The second jig is engaged with the third jig, and the movement limit at the intermediate position of the slide door is performed by attaching the tape to the slide rail and interposing the roller part at the tape step. To do.

Car bodies that have been electrodeposited or painted are dried in a drying oven. Raises the car body when it dries rather than paints, so that heat also turns to the bottom of the car body. That is, a vertical force is applied to the sliding door during painting and drying.
Drying is performed by holding the slide door in the vicinity of the fully closed position. At this time, the first jig is engaged with the third jig, and the slide door moves even when a vertical force is applied. There is nothing.
When the force in the vertical direction is not applied, the slide door can be held at the intermediate position by interposing the roller portion in the step portion of the tape.

  By entrusting the intermediate position to the tape, the size of the first and second jigs in the vehicle length direction can be reduced, and the first to third jigs can be made compact and light.

It is sectional drawing of the masking tape which concerns on this invention. It is a figure which shows the relationship between the sliding door at the time of a door closing, and a vehicle body. It is a perspective view of a door rail. It is a rear view of a door rail. It is a block diagram of the 1st-3rd jig | tool. It is a flowchart explaining the coating method of this invention. It is a flowchart explaining the coating method of this invention. It is a flowchart explaining the coating method of this invention. It is sectional drawing which shows the example of a change of a masking tape. It is a figure explaining the basic composition of the conventional jig for painting.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings are viewed in the direction of the reference numerals.

As shown in FIG. 1, a masking tape 10 as a tape includes a tape base 11 made of synthetic resin or paper, an adhesive layer 12 provided on the lower surface of the tape base 11, and a lower surface of the adhesive layer 12. And release paper 13 covering the.
The roller portion 18 indicated by an imaginary line moves horizontally on the upper surface of the masking tape 10 from the fully closed position to the fully open position.

The position of the roller portion 18 in the vicinity of the fully closed position of the slide door is indicated by a front position Rf, and the position of the roller portion 18 in the vicinity of the fully open position of the slide door is indicated by a rear position Rr. A region sandwiched between the front position Rf and the rear position Rr is an intermediate position Rm.
In the present invention, the step portion 14 including the pair of protrusions 14F and 14R is provided at the intermediate position Rm of the tape base material 11 so as to sandwich the roller portion 18 therebetween.

  The protrusion 14F protrudes from the general surface of the tape substrate 11 by about 0.5 to 3.0 mm. The protrusion 14 </ b> F can be obtained by attaching a piece (small piece) to the commercially available tape base 11, but is preferably integrally formed with the tape base 11. The same applies to the other protrusions 14R.

  As shown in FIG. 2, an upper rail 21, a center rail 22, and a lower rail 23 are attached to the vehicle body 20, and the slide door 25 moves back and forth while being supported by the center rail 22 and being guided by the rails 21 and 23. In FIG. 2, the slide door 25 is in the closed position.

  As shown in FIG. 3, the center rail 22 as a door rail of the present invention is a long material having a substantially L shape in order to move the slide door 25 toward the rear of the vehicle while moving toward the center of the vehicle body. A bracket 26 is movably attached to the door rail 22, and a sliding door (reference numeral 25 in FIG. 2) is fastened to the bracket 26.

As shown in FIG. 4, the main roller 18 and the sub roller 27 are rotatably attached to the bracket 26.
The door rail 22 is a grooved steel made up of a lower flange 28, an upper flange 29, and a web 31 connecting the flanges 28 and 29. A bolt 32 extends from the web 31 and is fastened to the vehicle body 20 by the bolt 32. In addition, the cross-sectional shape of the door rail 22 may be more complicated such as a C cross section.

  The upper surface of the lower flange 28 becomes the running surface 33 of the main roller 18, and the main roller 18 normally contacts the running surface 33. If paint is applied to such a running surface 33, problems such as the main roller 18 spinning idle occur. As a countermeasure, the masking tape 10 is affixed to the traveling surface 33 only during the painting process so that the traveling surface 33 is not coated with paint.

Next, the structure of the first to third jigs 36, 44, and 49 will be described.
As shown in FIG. 5, the first jig 36 is detachably attached to the front pillar 35 in front of the slide door 25. The first jig 36 includes an L-shaped portion 38 including a handle 37, a pin 39 for temporarily fixing the L-shaped portion 38 to the front pillar 35, and extends rearward from the middle of the L-shaped portion 38 and extends to the center of the vehicle body. And a bent bar 41. The folding bar 41 is small and lightweight. The L-shaped portion 38 is also small and light. Therefore, the first jig 36 is small and lightweight.

  Moreover, the 2nd jig | tool 44 is attached to the back pillar 43 behind the front pillar 35 so that removal is possible. The second jig 44 includes a U-shaped portion 45 formed by bending a round bar and a flange portion 46 provided at one end of the U-shaped portion 45, and the flange portion 46 has a depth of insertion into the rear pillar 43. It plays a role to define. The second jig 44 is small and light.

  A third jig 49 is detachably attached to the lower front corner of the window frame 48 of the slide door 25. The third jig 49 includes, for example, a bifurcated base material 51 that is inserted into the window frame 48 from above, an elevating member 52 that is slidably inserted into the base material 51, and extends from the elevating member 52 to the center of the vehicle body. A cross bar 53, a longitudinal bar 54 fixed to the front end of the cross bar 53 and extending in the longitudinal direction of the vehicle body, a front flange 55 extending downward from the front end of the longitudinal bar 54, and downward from the rear end of the longitudinal bar 54. The rear side flange portion 56 extends.

  The third jig 49 is larger and heavier than the first and second jigs 36 and 44, but is much smaller and lighter than conventional jigs.

A method of painting the vehicle body 20 using the first to third jigs 49, the masking tape 10, and the door rail 22 described above will be described with reference to FIGS.
In ST01 of FIG. 6 (step number 01, the same applies hereinafter), the first to third jigs 49 are prepared, and the masking tape 10 including the stepped portion 14 as shown in FIG. 1 is prepared.

  And as shown in FIG. 4, the masking tape 10 is affixed on the running surface 33 of the door rail 22 (ST02).

  In the manner shown in FIG. 5, the first to third jigs 36, 49, 49 are attached to predetermined positions of the vehicle body 20, and the door rail 22 is attached to the vehicle body 20 using the bolt 32 shown in FIG. 4 (ST03).

The main roller 18 of the bracket 26 to which the slide door 25 is fastened is fitted into the door rail 22 as shown in FIG. 4 (ST04).
By being immersed in the electrodeposition tank in this state, electrodeposition coating is applied to the vehicle body 20 and the slide door 25 (ST05). At this time, the position of the slide door 25 is arbitrary.

In ST06 of FIG. 7, the slide door 25 is forcibly moved to the open position (position near the fully open position) by a robot or manually.
Then, the sliding door 25 is temporarily connected to the vehicle body by engaging the rear flange of the third jig with the second jig (ST07).
A sealer is applied to a predetermined part of the slide door or the vehicle body (ST08).
When the application is finished, the rear flange of the third jig is released from the second jig (ST09).

  Next, the slide door 25 is forcibly moved to an intermediate position (a position between the fully closed position and the fully open position, a half-open position) (ST10). The main roller 18 indicated by an imaginary line in FIG. 1 gets over the protrusion 14F (or 14R) so that the main roller 18 is located between the protrusions 14F and 14R. That is, the movement of the main roller 18 is restricted by the stepped portion 14. Although this restriction is gentle, there is no fear that the main roller 18 will get over the protrusion 14F or 14R by the vibration level when the vehicle body is horizontally conveyed by the conveyor.

  The slide door 25 is held at an intermediate position, and in this state, a sealer is applied to the slide door and the vehicle body (ST11).

Next, the slide door 25 is forcibly moved to the closed position (position near the fully closed position) by a robot or manually (ST12). Then, the sliding door 25 is temporarily connected to the vehicle body by engaging the front flange of the third jig with the first jig (ST13).
A sealer is applied to a predetermined part of the slide door or the vehicle body (ST14).

When the application is finished, the front flange of the third jig is released from the first jig (ST15).
That is, the sealer applies the coating in three times by holding the slide door 25 in the open position, the intermediate position, and the closed position. By dividing into three times, there are no hard-to-paint parts, the sealer application work becomes easy, and no unpainted parts are left.

In ST16 of FIG. 8, the slide door 25 is forcibly moved to the open position (position near the fully open position) by a robot or manually.
Then, the sliding door 25 is temporarily connected to the vehicle body by engaging the rear flange of the third jig with the second jig (ST17).
The sliding door and the inner plate of the vehicle body are painted (ST18).
When the application is finished, the rear flange of the third jig is released from the second jig (ST19).

Next, the slide door 25 is forcibly moved to the closed position (position near the fully closed position) by a robot or manually (ST20). Then, the sliding door 25 is temporarily connected to the vehicle body by engaging the front side flange of the third jig with the first jig (ST21).
The sliding door and the outer plate of the vehicle body are painted (ST22).

  The painted slide door 25 is put into a drying furnace together with the vehicle body 20 to perform predetermined drying (ST23). At the time of this insertion, the vehicle body 20 rises and the slide door 25 swings up and down. However, since the front flange 55 shown in FIG. There is no worry that the door 25 moves backward.

  Next, it discharges from a drying furnace, a 1st-3rd jig | tool is removed from a vehicle body, and the masking tape 10 is peeled from the door rail 22 (ST24).

  Masking tape is an essential part in the painting process. By skillfully utilizing this essential part, in addition to the original masking action, the holding action of the intermediate position of the sliding door 25 and the holding action of the open position were exhibited.

  In the above-described embodiment, the order is electrodeposition coating → inner plate coating → outer plate coating. However, electrodeposition coating → outer plate coating → inner plate coating may be used.

Next, a modification example of the masking tape 10 will be described.
As shown in FIG. 9, the stepped portion 14 may be a recess recessed in the tape base material 11.

  The first to third jigs 36, 44, and 49 may be appropriately changed in the structure shown in FIG. 5 within a range where the size and weight can be reduced.

  In the present invention, the sliding door 25 is held at the open position, the intermediate position, and the closed position by the first to third jigs 36, 44, 49 and the masking tape 10.

  If the masking tape 10 is not employed, it is necessary to add an L-shaped member that extends to the middle position at the rear end of the folding bar 41 shown in FIG. 5 or the front end of the U-shaped portion 45. Then, the 1st jig | tool 36 or the 2nd jig | tool 44 becomes large sized, and the attachment or detachment work to these vehicle bodies becomes troublesome.

  In this regard, according to the present invention, the first to third jigs 36, 44, and 49 can be reduced in size and weight by skillfully using the masking tape 10 essential for painting.

  In the embodiment, the intermediate position is one, but the intermediate position may be two or more. In this case, the masking tape 10 can be dealt with only by providing two or more step portions 14, and there is no concern that the manufacturing cost of the jig or the like will increase.

  The present invention is suitable for a painting process of a vehicle including a sliding door.

  DESCRIPTION OF SYMBOLS 10 ... Tape (masking tape), 14 ... Step part, 14F, 14R ... Projection, 18 ... Roller part (main roller), 20 ... Car body, 22 ... Door rail (center rail), 25 ... Sliding door, 36 ... First treatment Tool 44 ... second jig 49 ... third jig Rm ... intermediate position.

Claims (3)

A peelable tape that is affixed to a door rail that opens and closes a sliding door,
The tape is characterized in that a step portion for restricting the movement of the roller portion attached to the slide door is provided at one position in an intermediate position between the fully closed position and the fully open position of the slide door. . A door rail attached to the vehicle body,
A peelable tape provided with a step portion that restricts movement of the roller portion attached to the slide door at one position between the fully closed position and the fully open position of the slide door is affixed. The door rail characterized by. A painting method for electrodeposition, drying and painting on a vehicle body equipped with a sliding door,
A first jig detachably attached to the front pillar in front of the slide door, a second jig detachably attached to the rear pillar behind the front pillar, and a third jig detachably attached to the slide door. And a tape having a step portion for restricting movement of the roller portion attached to the slide door,
The movement limit in the vicinity of the fully closed position of the sliding door is implemented by engaging the first jig with the third jig,
The movement limit in the vicinity of the fully open position of the sliding door is implemented by engaging the second jig with the third jig,
The vehicle body painting method is characterized in that the movement restriction at an intermediate position of the slide door is performed by attaching the tape to a slide rail and interposing the roller portion on a step portion of the tape.

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